• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a convection device of a microwave oven comprises a heater chamber formed on the out-side surface of a cooking chamber, a fan housing installed inside of the heater chamber so as to be rotational within a predetermined rotation range including an inlet hole where the air inside of the heater chamber flows into and a discharging hole for providing the air into the cooking chamber, and a fan installed inner side of the fan housing for generating air flow provided into the cooking chamber through the discharging hole. Accordingly, the present invention can provide the heated-air uniformly to the each portion inside of the cooking chamber.
    公开号:US20010004076A1
    申请号:US09/740,265
    申请日:2000-12-19
    公开日:2001-06-21
    发明作者:Seog Kim；Geun Lee；Kwang Kang
    申请人:LG Electronics Inc；
    IPC主号:H05B6-6473
    专利说明:
    [0001] 1. Field of the Invention [0001]
    [0002] The present invention relates to a microwave oven including a heater, in particular to a convection device of a microwave oven which is capable of providing the heat generated from a heater uniformly inside of a cooking chamber. [0002]
    [0003] 2. Description of the Prior Art [0003]
    [0004] A microwave oven heats a heating object by using microwave. In recent years, in order to add more various heating function to the microwave oven, the heater is installed as the other heating source besides the microwave, and the heat generated by the heater is used for heating the heating object. [0004]
    [0005] FIG. 1 illustrates the conventional microwave oven including the heater as the heating source besides the microwave. As depicted in FIG. 1, a heater chamber [0005] 4 is formed on the external upper portion of a cooking chamber 2, and heaters 6 a, 6 b are installed inside of the heater chamber 4.
    [0006] A fan [0006] 10 is installed on the center portion of the heater chamber 4, the fan 10 is rotated by a motor M installed on the upper portion of the heater chamber 4. A sucking portion 8 and discharging portion 9 a, 9 b are formed on the upper surface of the cooking chamber 2 corresponding to the bottom surface of the heater chamber 4 in order to circulate air by the fan 10.
    [0007] In more detail, the sucking portion [0007] 8 is formed on the lower center portion of the fan 10 in order to suck the air inside of the cooking chamber 2, and the discharging portion 9 a, 9 b are formed on the portion corresponding to the lower edge of the fan 10 in order to provide the air sucked through the sucking portion 8 to the inside of the cooking chamber 2.
    [0008] In the conventional microwave oven, when the heating is performed by the heater [0008] 6 a, 6 b, the fan 10 operates at the same time with the heat generation of the heater 6 a, 6 b to which power has been applied. The air sucked from the cooking chamber 2 by the sucking portion 8 according to the operation of the fan 10 is heated while circulating inside of the heater chamber 4 and passing through the heater 6 a, 6 b, and is flowed into the cooking chamber 2 through the discharge portion 9 a, 9 b.
    [0009] However, the conventional convection heating type microwave oven has below problems. [0009]
    [0010] In the heat convection, the heated-air circulating inside of the heater chamber [0010] 4 and cooking chamber 2 can not circulate sufficiently inside of the cooking chamber 2 while flowing through the sucking portion 8 on the center portion and the discharge portion 9 a, 9 b on the edge. In other words, the circulation of the heated-air is even on the upper center portion of the cooking chamber 2 adjacent to the fan 10, but the circulation of the heated-air on the lower portion such as a corner portion is not even.
    [0011] In the heat convection of the convection heating type microwave oven, because the air-flow is generated by sucking the air on the center portion and using the centrifugal force of the fan [0011] 10 downwardly fixed, the appropriate air-flow for transmitting the heat to the overall cooking chamber 2 can not be generated. Accordingly, the foodstuff can not be uniformly heated because the conventional convection heating type microwave oven can not uniformly distribute the heat.
    [0012] And, the air provided through the discharge portion [0012] 9 a, 9 b is the heated-air heated through the heat-exchange with the heater 6 a, 6 b, when the heated-air is provided to the inside of the cooking chamber 2, the heated-air contacts first with a side surface of the cooking chamber 2, accordingly the temperature of the heated-air lowers due to the heat loss. In other words, the heat transmission efficiency with the foodstuff lowers because the heat of the air is taken away to the side wall surface by contacting it first. SUMMARY OF THE INVENTION
    [0013] The object of the present invention is to provide a convection device of a microwave oven which is capable of transmitting uniformly the heat generated from a heater to each part inside of a cooking chamber. [0013]
    [0014] The other object of the present invention is to provide the convection device of the microwave oven which is capable of providing selectively the heat generated from the heater to a predetermined portion inside of the cooking chamber. [0014]
    [0015] In order to achieve the objects, the convection device of the present invention comprises a heater chamber installed on the side wall surface of the cooking chamber, a fan housing installed inside of the heater chamber so as to be rotational within a predetermined rotation range including an inlet hole where the air inside of the heater chamber flows into and a discharging hole for providing the air into the cooking chamber, and a fan installed inner side surface of the fan housing for generating the air-flow provided inside of the cooking chamber through a discharging hole. [0015] BRIEF DESCRIPTION OF THE DRAWINGS
    [0016] FIG. 1 is a sectional view illustrating the construction of a conventional convection device. [0016]
    [0017] FIG. 2 is a sectional view illustrating the construction of a convection device according to the present invention. [0017]
    [0018] FIG. 3A is a sectional view illustrating the operation of a fan housing according to the present invention. [0018]
    [0019] FIG. 3B is a sectional view illustrating the operation of a fan housing according to the other embodiment of the present invention. [0019]
    [0020] FIG. 3C is a sectional view illustrating the operation of a fan housing according to the another embodiment of the present invention. [0020]
    [0021] FIG. 4 is a perspective view illustrating the construction of a fan housing according to the present invention. [0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
    [0022] Hereinafter, the embodiment of a convection device of a microwave oven according to the present invention will now be described with reference to accompanying drawings. [0022]
    [0023] As depicted in FIG. 2, a heater chamber [0023] 30 is formed on the out-side surface of a cooking chamber 20 of the microwave oven according to the present invention.
    [0024] A fan [0024] 32 and a heater 35 as a heating source are installed inside of the heater chamber 30. The heat generated from the heater 35 is provided inside of the cooking chamber 20 through the airflow by the fan 32. It is possible to construct a pair of straight shape heaters or one U-shaped bending heater as the heater 35.
    [0025] An inlet/outlet portion [0025] 42 for sucking or discharging the air to the cooking chamber 20 is formed on the lower side surface of the heater chamber 30 installed on the upper surface of the cooking chamber 20, the inlet/outlet portion 42 is generally constructed as a mesh-net or a plate having a plurality of air through hole.
    [0026] As depicted in FIG. 2, when the fan housing [0026] 31 is downwardly placed, the inlet/outlet portion 42 is constructed with a discharging portion 42 a for providing downwardly the high temperature air to the cooking chamber 20, and a sucking portion 42 b for sucking the low temperature air performed the heat transmission inside of the cooking chamber 20 to the inside of the heater chamber 30.
    [0027] The inlet/outlet portion [0027] 42 connects the inside of the heater chamber 30 to the cooking chamber 20 to be ventilated.
    [0028] As depicted in FIGS. 3A, 3B, [0028] 3C, the fan housing 31 is installed so as to be rotational within a predetermined rotation range. In addition, the rotating angle range of the fan housing 31 can be controlled according to type or amount of the foodstuff. Accordingly, a discharging hole 31 b of the fan housing 31 rotates to the left or center or right directions inside of the cooking chamber 20. Likewise, it is possible to provide uniformly the heated-air to the each portion inside of the cooking chamber 20 by installing the fan housing 31 to be rotational.
    [0029] The structure of the fan housing [0029] 31 according to the present invention will now be described.
    [0030] As depicted in FIG. 4, a rack gear unit [0030] 33 is formed on the outer side of the fan housing 31. As depicted in FIG. 3, a rack gear 33 a of the rack gear unit 33 rotates within a predetermined rotation range according to direct or reverse rotation of an operating gear 34 by meshing with an operating gear 34. The operating gear 34 is connected to an output shaft of a stepping motor Ms that can rotate to the direct or reverse rotation.
    [0031] And, an inlet hole [0031] 31 a where the outer air flows into the fan housing is formed on the upper portion of the fan housing 31, and a discharging hole 31 b for discharging the air inside of the cooking chamber 20 is formed on the lower portion of the fan housing 31. The air flowed into the fan housing 31 through the inlet hole 31 a is the heated-air which made of the heat exchange between the heater 35.
    [0032] A non-described reference numeral M of FIG. 4 is an operating motor for rotating the fan [0032] 32 according to the present invention. And, in the present invention, a radial-flow flow fan is used as the fan 32, but the present invention is not limited by that.
    [0033] Hereinafter, the overall operating relation of the convection device according to the present invention will now be described. [0033]
    [0034] When the power is applied to the heater [0034] 35, the heater 35 heats and at the same time the fan 32 rotates and generates the airflow. In addition, when the power is applied to the stepping motor Ms, the stepping motor Ms performs the direct and reverse rotation within the predetermined rotation range.
    [0035] The air flow generated according to the rotation of the fan [0035] 32 is discharged through the discharging hole 31 b formed on the lower portion of the fan housing 31, after passing the inlet hole 31 a formed on the upper portion of the fan housing 31, passes through the inlet/outlet portion 42, and is provided inside of the cooking chamber 20.
    [0036] In addition, at the same time the operating gear [0036] 34 repeats the direct or reverse rotation within the predetermined rotation range by operating of the stepping motor Ms, as depicted in FIGS. 3A, 3B, 3C, the fan housing 31 is rotated repeatedly within the predetermined rotation range. And the heated-air flowed into the cooking chamber 20 can be provided uniformly to the each portion of the cooking chamber 20, accordingly the uniform temperature distribution is performed.
    [0037] And, the heated-air flowed into the cooking chamber [0037] 20 by the fan housing 31 performs the heat exchange while contacting with the foodstuff F, the low temperature air which is altered from the heated-air flows again into the heat chamber 30 through the inlet/outlet portion 42 after passing the other wall surface of the cooking chamber 20.
    [0038] The low temperature air flowed into the heater chamber [0038] 30 is re-heated by the heater 35, and is provided into the cooking chamber 20 through the fan housing 31.
    [0039] In the other embodiment of the present invention, it is possible to provide concentrically the heated-air to the selected portion inside of the cooking chamber [0039] 20 by using the fan housing 31. And, it is possible also to adapt the convection device of the microwave oven according to the present invention to a general cooking oven for cooking oven for cooking the foodstuff.
    [0040] As described above, the convection device of the microwave oven according to the present invention is capable of providing uniformly the heated-air inside of the cooking chamber [0040] 20 by rotating the fan housing, and providing concentrically the heated-air to the predetermined portion, accordingly the microwave oven according to the present invention is convenient to use. In addition, the convection device of the microwave oven according to the present invention is capable of controlling the rotating range of the fan housing 31 in accordance with the type or amount of the foodstuff, accordingly the foodstuff can be cooked uniformly and the cooking speed can be improved.
    [0041] In addition, the heated-air provided into the cooking chamber [0041] 20 through the fan housing 31 contacts first with the foodstuff, and is sucked through the side wall of the cooking chamber 20, accordingly the heat loss which is transmitted to the outside of the cooking chamber 20 can be minimized. In addition, the efficiency of the energy consumption and quality of the dish cooked by using the convection device of the microwave oven according to the present invention can be improved by using the heat efficiently and reducing the cooking time.
    权利要求:
    Claims (6)
    [1" id="US-20010004076-A1-CLM-00001] 1. A convection device of a microwave oven, comprising
    a heater chamber formed on the side wall surface of a cooking chamber;
    a fan housing installed inside of the heater chamber so as to be rotational within a predetermined rotation range including an inlet hole where the air inside of the heater chamber flows into and a discharging hole for providing the air into the cooking chamber; and
    a fan installed inner side of the fan housing for generating airflow provided into the cooking chamber through the discharging hole.
    [2" id="US-20010004076-A1-CLM-00002] 2. The convection device of the microwave oven according to
    claim 1 , wherein the fan is a radial-flow fan.
    [3" id="US-20010004076-A1-CLM-00003] 3. The convection device of the microwave oven according to
    claim 1 , wherein a rack gear unit is formed on the outer side surface of the fan housing.
    [4" id="US-20010004076-A1-CLM-00004] 4. The convection device of the microwave oven according to
    claim 3 , wherein a rack gear of the rack gears unit is formed to mesh with an operating gear.
    [5" id="US-20010004076-A1-CLM-00005] 5. The convection device of the microwave oven according to
    claim 4 , wherein a motor combined to an output shaft of the operating gear is a stepping motor.
    [6" id="US-20010004076-A1-CLM-00006] 6. The convection device of the microwave oven according to
    claim 5 , wherein the motor can rotate to the direct and reverse rotation, and can rotate the fan housing within a predetermined rotation range.
    类似技术:
    公开号 | 公开日 | 专利标题
    US6392211B2|2002-05-21|Convection device of microwave oven
    EP1211914B1|2010-10-06|Heating apparatus supplying a heat source other than microwave in a microwave oven
    US6528773B2|2003-03-04|Microwave oven with a convection heater and airflow mechanism to optimize convection cooking
    US6346691B2|2002-02-12|Convection fan control method of microwave oven
    US6541745B2|2003-04-01|Heater system for microwave oven
    JP2002206748A|2002-07-26|Heating apparatus for microwave oven
    JP2002243156A|2002-08-28|Heating cooking apparatus
    US7345261B2|2008-03-18|Wall-mounted microwave oven
    CN112656246A|2021-04-16|Cooking device
    US20010004069A1|2001-06-21|Electronic range
    KR100389440B1|2003-06-27|Convention device for microwave oven
    KR101568039B1|2015-11-10|Convection microwave oven
    KR100676135B1|2007-02-02|Oven equipped with double convection-fans
    JP2003254537A|2003-09-10|Fan device and heating cooker using fan device
    KR19980017801U|1998-07-06|microwave
    JP2003185141A|2003-07-03|Heating cooker
    JP3823033B2|2006-09-20|Cooking equipment
    JPH09126458A|1997-05-16|Convection oven
    JP2011080710A|2011-04-21|Heating device
    JP2005030644A|2005-02-03|Heating cooker
    JP2004028512A|2004-01-29|Cooking utensil
    JP2005233522A|2005-09-02|Heating cooker
    KR200191586Y1|2000-08-16|A base plate and tray structure for heat dispersion in microwave oven
    KR100390491B1|2003-07-04|Heating device for microwave oven
    KR200182325Y1|2000-05-15|A tray guide for micro-wave oven
    同族专利:
    公开号 | 公开日
    ES2225055T3|2005-03-16|
    KR20010065013A|2001-07-11|
    EP1111965A2|2001-06-27|
    CN1150393C|2004-05-19|
    DE60012867D1|2004-09-16|
    US6392211B2|2002-05-21|
    CN1300920A|2001-06-27|
    EP1111965A3|2002-12-11|
    DE60012867T2|2005-09-08|
    EP1111965B1|2004-08-11|
    DK1111965T3|2004-12-06|
    AT273607T|2004-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US20150362245A1|2013-03-15|2015-12-17|Whirlpool Corporation|Active insulation hybrid dual evaporator with rotating fan|US3692968A|1970-04-06|1972-09-19|Sanyo Electric Co|Electronic oven|
    US4409453A|1976-05-19|1983-10-11|Smith Donald P|Combined microwave and impingement heating apparatus|
    JPS5930970B2|1979-07-13|1984-07-30|Sanyo Electric Co||
    DE3116171C2|1981-04-23|1987-07-09|Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt|Baking and roasting oven|
    US4439459A|1982-03-08|1984-03-27|Swartley John S|Convection food heating|
    JPS58221336A|1982-06-18|1983-12-23|Sanyo Electric Co Ltd|Cooker|
    US4559903A|1984-08-13|1985-12-24|Bloom Phyllis R|Pet dryer|
    US4714811A|1986-07-18|1987-12-22|Jova Enterprises, Inc.|Microwave oven and method with controlled heating profile|
    US4865169A|1988-06-20|1989-09-12|Lem Rachels|Device for controlling the rate of movement of a piston rod relative to a cylinder|
    US5401940A|1990-01-10|1995-03-28|Patentsmith Ii, Inc.|Oscillating air dispensers for microwave oven|
    US5379684A|1991-10-29|1995-01-10|Moulinex Swan Holding Limited|Deep fryer|
    GB9313171D0|1993-06-25|1993-08-11|Merrychef Ltd|Microwave heating|
    US5367739A|1993-07-13|1994-11-29|Johnson; Archie L.|Oscillating air blowers for drying vehicles|
    JP3420655B2|1995-05-23|2003-06-30|株式会社アドバンテスト|IC tester handler thermostat|
    KR0119927Y1|1995-06-29|1998-08-01|김광호|Microwave oven|KR20050053946A|2003-12-03|2005-06-10|삼성전자주식회사|Wall mounted type microwave oven|
    SG184719A1|2004-12-14|2012-10-30|Enodis Corp|Impingement/ convection/ microwave oven and method|
    US20070062935A1|2005-08-25|2007-03-22|Matthew Dawson|A microwave heating system for conditioning air in a space by heating the air to change its temperature|
    US8022341B2|2007-05-15|2011-09-20|Appliance Scientific, Inc.|High-speed cooking oven with optimized cooking efficiency|
    US8455797B2|2007-05-15|2013-06-04|Appliance Scientific, Inc.|High-speed cooking oven with optimized cooking efficiency|
    US8026463B2|2007-05-15|2011-09-27|Appliance Scientific, Inc.|High-speed cooking oven with optimized cooking efficiency|
    US7435931B1|2007-05-15|2008-10-14|Appliance Scientific, Inc.|High-speed cooking oven with optimized cooking efficiency|
    US8129665B2|2007-05-15|2012-03-06|Appliance Scientific, Inc.|Apparatus and method for heating or cooling an object using a fluid|
    US8134102B2|2007-05-15|2012-03-13|Appliance Scientific, Inc.|High-speed cooking oven with cooking support|
    US8993945B2|2010-05-04|2015-03-31|Appliance Scientific, Inc.|Oven circulating heated air|
    WO2011140503A1|2010-05-06|2011-11-10|Appliance Scientific, Inc.|A plurality of accelerated cooking ovens with master-slave power assembly|
    CN103239147B|2012-02-05|2015-09-30|周林斌|Rotate air-out baking oven|
    法律状态:
    2000-12-19| AS| Assignment|Owner name: LG ELECTRONICS INC., KOREA, DEMOCRATIC PEOPLE'S RE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, SEOG TAE;LEE, GEUN HYOUNG;KANG, KWANG OK;REEL/FRAME:011396/0066 Effective date: 20001117 |
    2005-11-04| FPAY| Fee payment|Year of fee payment: 4 |
    2009-12-28| REMI| Maintenance fee reminder mailed|
    2010-05-21| LAPS| Lapse for failure to pay maintenance fees|
    2010-06-21| STCH| Information on status: patent discontinuation|Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
    2010-07-13| FP| Lapsed due to failure to pay maintenance fee|Effective date: 20100521 |
    优先权:
    申请号 | 申请日 | 专利标题
    KR99-59512||1999-12-20||
    KR59512/1999||1999-12-20||
    KR1019990059512A|KR20010065013A|1999-12-20|1999-12-20|Convection device for microwave oven|
    [返回顶部]